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English definition of “foil”

foil

noun
 
 
/fɔɪl/
[U] metal made into very thin sheets like paper and used mainly for covering food: UK aluminium foil/ US aluminum foilWrapping, packing and loading
a foil for sb/sth a person or thing that shows or emphasizes how different someone or something else isDifferent and difference
(Definition of foil noun from the Cambridge Learners Dictionary © Cambridge University Press)
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